rust pre-commit formatter for macOS

pre-commit

#!/bin/bash

# Create list of rust files
FILES=()
while IFS= read -r -d '' file; do
    FILES+=("$file")
done < <(git diff --cached --name-only -z -- '*.rs')

if [ "${#FILES[@]}" -eq 0 ]; then
    exit 0
fi

cargo fmt -- "${FILES[@]}"
git add -- "${FILES[@]}"